Orchid seeds are tiny, with virtually no endosperm and with miniscule cotyledons. If such seeds are deposited in a dark, moist environment, then which of the following represents the most likely means by which fungi might assist in seed germination, given what the seeds lack?
A) by transferring some chloroplasts to the embryo in each seed
B) by providing the seeds with water and minerals
C) by providing the embryos with some of the organic nutrients they have absorbed
D) by strengthening the seed coat that surrounds each seed
Hypothetical stages in the evolution of seeds.
Structure of eudicot and monocot seeds
Giardiasis. Colorized electron micrograph of a Giardia protozoan adhering to the surface of an epith
Scientists and seeds
A zebra orchid (Caladenia cairnsiana) mimics the scent of a female wasp